Buck rake winch clutch and brake control



7 Jan. 4, 1949. I R. c. KENCK BUCK RAKE WINCH CLUTCH AND BRAKE CONTROL File d Feb. 15, 1948 2 Sheets-Sheet 1 I N V EN TOR. fi/c/mrl ci C fie/raw BY v ' ArroR/vfys Jan. 4 1949. Ric. KENCK I BUCKRAKE WINCH CLUTCH AND BRKKE CONTROL File d Feb. 15, 1948 2 Sheets-Sheet 2 INVENTOR. fi/cfiard 67 176/7 c/r Patented Jan. 4, 1949 unit an srA-rr ES PAT EN-T OFFICE BUOKE RAKE W-INCHDLUTCH BRAKE CONTROL.

Richard 1C. Kenck, Augusta, Mont.

ApplicationlFebruary 13, 1948;.S1erial-No 8,257

4iClaims... (C1. 25.4--18.7)

This invention relates to hoistidevices; andmore particularly to a-winchfor useindiftingloads on power sweep rakes, bulldozers, and the like.

A main object of: the invention. is to provide a novel and improved winch device for use. on

power. driven equipment such as ona-buck'rake,

or -the-.1ike, the.-Winch deviceibeing adapted to be driven by the power-take off shaft of the. ma-

chine, and being under positive control for. either.

up or -downtmovementuoflthe load, thermovement of the 1oadzbeing'c0ntrolled byyaw simple motion Of1;'t1'ie-.cOntrO1 .lever of the: winch device:

Agfurtherrobject; ofthe. invention is to provide an improved: winch device for buck rakesaand similar. equipment, said'winch device being very simple-hrconstruction, easy to operate, and providing:ability to rapidly arrest themovement; of.

Figure 3 is an en'largedlcross-sectional detail.

view taken: through. the clutch sleeve portion. of the buckrake winchdevice of Figures 1'1 and 2.

Figure 4 isan elevationaldetail View. of the clutch shifter fork-member employediin' the winch.

device of Figures 1' and 2( Figure 5 I is a cross sectional' detail view-taken on line 55 of Figure 2.

Referring to the drawings, ll designates: the supporting frame of the winch device, said frame being adaptedto be installed on a buck rake or similar machine, andcomprisinga main'plate element l2'from which project spaced parall'el'wall elements i3, i4 and I5. Journaled on suitable bearings in the wall elements l4 and I5"'is a shaft H3- carrying between saidwall elements a cablereel IT; to one-fiangeofwhicha cable, not shown, may be secured by means of 1 a- U-clamp 58, whereby the'cable may be wound upon the reel.

Journaled at one endportion thereofin theremaining wall element I3 is a shaft 19 adapted to be connected to the power take-off shaft of the rake, loader, or other machine on whichthe frame H isinstalled. Shaft.l.9;is reduced in diameter at its other end portion, as shown at 28 in Figure 3, said reduced end 28 being: journaled in the wall element 14. Rotatively carried on said re duced end portion 28 is a drum member 20 which is intergrally formed with a gear 2|. Secured to shaft IS in the same tranverse plane as gear 2| is agear, 22 meshing with-gear 2i. Rotationof drum member 2.0,is therefore transmitted to reel I :1 in'aipositive manner.

Slidably mounted on reduced shaft portion 28 inside-adrum-membenn is., .a; friction disc'element.

24. Shaft, l9. is.-formed with arsplined portion 25. and longitudinally-slidable;thereon but keyed thereto is awsleevemember-Zfi formedintegrally with: a.- clutch discv 2 1 which faces disc element 24. A.- roller bearing29 rotativelysupports: drum member 20 on reduced shaft portion 28. Rota? tivelyand slidablysupported on.-sleeve member 26 is an outer; flanged'sleeve .30tformed with an-ane nular groove 31 Thefiang-e of sleeve 30, indicated. at 3W is: located? adjacent disc. 21: and is provided with ballbearings l at ;the surface thereof Which. faces disclili When sleeve30 ismoved to the right assviewed in Figure 3; flange 3.0.. engages disc 21; movingsleevemember-Zfito the right, and. flange 2] exerts axial, pressure onfrictiondisc 24; compressing itaagainst the inside-wall sure face of drum member 2fl. li his couples-shaft, l9. tozdrzum' memberdfl.

Projecting inwardly fromwall element. 13 is z a lug-32 formed with-a right-angled endportiom 33, and pivotally secured on said end portiom33:

is 1 a" lever: member 34 having-v a yoke portion: 35 which: is received. in i groove 31k to the-intermediate portion= ofv ayhandlever 31;

said hand'lever being pivotally connected atone endithereoft to an. arm 38' rigidly secured to "wall element. I31 When .lever' 31 is rotated counter,-

clockwise; asiVieWed in'Eigure 1, lever 34 rotates.

clockwise around its pivotal bearing; 3-3ran-d'vmoves clutch plate .2 1 :into engagement: with friction disc element. 24". and'moves disc element against the inner: Wall surfaceofJdrum 20, whereby torque isr transmitted fromishaft IE to. the drum 20'; .as.

above described; thereby rotating. reel. l1;

Projectinginwardly from wall element I4 is a: lug'3'9 to which'is pivotally connected, for rotation in" a' vertical longitudinalplane, a lever =4fll One end oflever40 carries a dog 41 fadapted'to-be; received in. an 1 oneof a: series. of openings 41'" formed in the-outerwall of' drum 211', a sprin 42:

as viewed in Figure 1, whereby dog 4| isurged toward locking: engagement with the openings in drum 20. The end of lever adjacent; spring 42 is received in-a yoke '44 secured to lever 34, where- I by lever 40 is rotated clockwise with lever "when the-clutch platel'l is moved' toward disc element 24'asabove describeda' The dog-4 l is sufficiently short in length so that it is removed from the opening in drum 20 prior to the engagement of clutch plate 21 with friction disc 24.

Secured to main plate 12 at 45 and encircling Theother endof lever member 314risi connected'by aJinle bar. 35"

the drum 20 is a brake band 46 formed at its end with an outwardly extending apertured lug 41. Secured to plate I2 is a rod member 50 formed at its end with a right angled apertured arm 5| facing lug 41. Passing slidably through lug 4! and arm 5| is a bolt 52 provided adjacent arm 5| and with a nut 53. A coiled spring 54 encircles bolt 52 and bears between arm 5| and lug 41, biasing brake band 46 into frictional engagement with drum 20.

Yoke member 35 carries an extension 55 to which is secured an L-shaped member 56 having a tapered arm 51 which engages the head 'of bolt 52, as shown in Figure 5. When lever 34 rotates clockwise around its pivotal bearing 33 to move the sleeve 30 to the right, as viewed in Figures 1 and 2, tapered arm 5! exerts a camming action on said bolt head and expands the brake band 46, thereby releasing the drum 20. The taper angle of arm 51 is adjusted so that the brake band is released after dog 4| leaves the aperture M in drum 20 but immediately prior to the engagement of clutch plate 27 with clutch disc 24.

It is thus seen that by moving hand lever 31 a small distance counter-clockwise, as viewed in Figure 1, dog 4| may be disengaged from drum 2!], the load on the reel I! being still held sta tionary by the braking action of brake band 46 on drum 20. Further counter-clockwise movement of hand lever 31 will release the brake band so that the load may descend freely, if so desired. Still further counter-clockwise movement of hand lever 31 will cause the clutch plate 21 to engage clutch disc 24 and reverse the free running movement of the load, causing the load to be elevated by the reel Return of the hand lever 31 to its starting position will positively lock the drum 20 as soon as dog 4| re-enters an opening 4| in drum 20. By manipulating the hand lever 31 back and forth, the load may be raised or lowered as desired.

While a specific embodiment of a Winch mechanism for buck rakes and the like has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claims.

What is claimed is:

1. A winch apparatus comprising a support, a drive shaft journaled in said support, a drum rotatably mounted on said drive shaft, a reel journaled in said support, means coupling said reel to said drum, a brake band secured to said support and encircling said drum, means biasing said brake band into braking contact with the drum, a sleeve keyed to said shaft and slidable axially thereon, a friction disc on said shaft between said sleeve and said drum and movable into engage ment with said drum, a lever pivoted to said support and engaging said sleeve to move the sleeve axially responsive to rotation of said lever, and means carried by said lever and engageable with said brake biasing means for relieving the braking tension on said brake band responsive to the rotation of said lever.

2. A winch apparatus comprising a support, a drive shaft journaled in said support, a drum rotatably mounted on said drive shaft, a reel journaled in said support and coupled to said drum, a

brake element engaging said drum and normally biased into braking contact therewith, a sleeve keyed to said shaft and slidable axially thereon, a friction disc on said shaft between said sleeve and said drum and movable into engagement with said drum, there being recesses formed in a wall of said drum, a locking member carried by said support and engageable in said recesses, means biasing said locking member toward recess-engaging position, a lever pivoted to said support and engaging said sleeve to move the sleeve axially responsive to rotation of said lever, and means carried by said lever and cooperating with said brake element and said locking member for moving the locking member out of recess-engaging position and relieving the braking tension on the brake element responsive to the rotation of said lever.

3. A winch apparatus comprising a support, a drive shaft journaled in said support, a drum rotatably mounted on said drive shaft, a reel journaled in said support and coupled to said drum, a brake element engaging said drum, means biasing the brake element into braking contact with said drum, there being a plurality of recesses in an end wall of said drum arranged arcuately around the axis of the drum, a locking lever pivoted to said support and engageable in said recesses, means biasing said locking lever toward recess-engaging position, a sleeve keyed to said shaft and slidable axially thereon, a friction disc on said shaft between said sleeve and said drum and movable into frictional engagement with said drum, a second lever pivoted to said support and engageable with said sleeve to move the sleeve axially responsive to rotation of said second lever, and means carried by said second lever and cooperating with said brake element and locking lever to move the locking lever out of recess-engaging position and relieve the braking force on the brake element responsive to the rotation of said second lever.

4. A winch apparatus comprising a support, a drive shaft journaled in said support, a drum rotatably mounted on said drive shaft, a reel journaled in said support and coupled to said drum, a brake band secured to said support and encircling said drum, spring means biasing said brake band into braking contact with the drum, there being a plurality of recesses in an end wall of said drum arcuately arranged around the axis of the drum, a locking lever pivoted to the support and formed with a dog portion engageable in said recesses, spring means biasing said locking lever toward recess-engaging position, a sleeve member keyed to said shaft and slidable axially thereon, a. friction disc on said shaft between said sleeve member and said drum and movable into frictional engagement with the drum, a second lever pivoted to said support and engaging said sleeve member to move the sleeve member axially responsive to rotation of said second lever, means carried by said second lever and engageable with said brake band to relieve the braking tension on the brake band responsive to rotation of said sce- 0nd lever, and further means on said second lever engaging the locking lever to also move the locking lever out of recess-engaging position responsive to said rotation of the second lever.

RICHARD C. KENCK.

No references cited. 

